About the Authors

Saliha Akca

Affiliation Department of Physics and Astronomy, California State University Northridge, Northridge, California, United States of America

Ashkan Foroughi

Affiliation Department of Physics and Astronomy, California State University Northridge, Northridge, California, United States of America

Daniel Frochtzwajg

Affiliation Department of Physics and Astronomy, California State University Northridge, Northridge, California, United States of America

Henk W. Ch. Postma

postma@csun.edu

Affiliation Department of Physics and Astronomy, California State University Northridge, Northridge, California, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: SA HWCP. Performed the experiments: SA AF DF HWCP. Analyzed the data: SA AF DF HWCP. Wrote the paper: SA AF DF HWCP.